Abstract: A method for registering a rotary press for a printing process, in which “n” inking systems (Fn) each produce monochrome printed images and print one on top of the other thereby producing n-colored printed images, includes producing the images of a printed material with at least one sensor station, recording information on rotary movements of printing plate cylinders (Dn), and using the images and the information to produce correction signals which actuate the cylinders until a deviation of the images of the respective inking systems from a desired position on the material lies within a defined range of tolerance values. During the registering method, one printing plate cylinder at a time is in the printing position, the sensor station produces the printed images, and the correction signals are obtained based on the image produced by the respective cylinder and the information on the rotary movements of at least one cylinder.

Abstract: A device for the transportation and chilling of a film tube extruded shortly before has at least one first pair of rollers, through the clearance between which rollers, the film tube enters into a chilling area, and a second pair of rollers, through the clearance between which rollers, the film tube leaves the chilling area. Thereby the film tube can discharge heat to its environment between the first and the second roller pair. The path length that the film traverses between the first roller pair and the second roller pair is variable.

Abstract: A mandrel-locking unit for a rotary printing machine has a mandrel-mounting element that surrounds print roller mandrels in an inner bearing for mounting a mandrel-supporting surface and into which the mandrel-mounting element can be slid such that the mandrel-supporting surface is released by the sliding movement. The unit has a pressurizing medium cylinder that provides the force required for the sliding movement and a piston, which delimits a pressure chamber of the pressurizing medium cylinder at a boundary surface and which is in contact with the mandrel-mounting element at a connecting point and conveys to the mandrel mounting element the pressure required for the sliding movement. A feature of the unit is that the distance between the boundary surface and the connecting point is smaller than the maximum stroke of the piston in the pressurizing medium cylinder.

Abstract: A machine for forming, filling, and sealing sacks has an unwinding device for a plastic tube, a cross-cutting device that cuts the tube perpendicularly to its principal axis of symmetry and creates tubular pieces in the process, a bottom forming means for forming a sack bottom at one end of the tubular piece, transport equipment to transport the resulting sacks through the machine, a filling station with a feeding element for filling the product in the sack, means of reducing the distance between the product discharge opening of the feed element and the bottom of the sack to be filled, and sealing means to seal the filled sack. The means of reducing the distance is a sack lifting device with which the sack can be lifted in the filling station such that an upper edge of the sack is located above the product discharge opening of the feed element.

Abstract: An extruder device includes an extruder worm and a worm drive that has a drive motor, which is provided with a rotor. The rotor is connected to the extruder worm during operation in such a way that the rotor and extruder worm rotate at the same speed during operation. The rotor can be connected to detachable torque-transmitting elements which transmit torque between the rotor and the extruder worm and which can be detached when refitting occurs. The detachable torque-transmitting elements include a torque-transmission point at which torque is transmitted from a bushing to a connecting section which is at least partially encompassed by the bushing. The torque-transmission point in an axial direction is located outside the rotor.

Abstract: An air ring with increased-control over the gauge uniformity of blown plastic film in a film extrusion device. The air ring includes a generally annular plenum, an annular orifice for discharging cooling air against an extruded plastic tube passing through the air ring, and a flow path for cooling air between the plenum and the annular orifice. The air flow path is segmented along a circumference of the annular plenum, the segments including a material with high heat conductivity and guiding the air from the annular plenum to the orifice. Heating elements are provided for individually and selectively heating the segments of the air flow path such that the temperature of the cooling air discharge against the extruded plastic tube can be locally varied.

Abstract: A method and a device for producing and filling sacks with at least four longitudinal seams provide a more cost-effective approach to producing and filling sacks. The material that forms the sacks is supplied from an unwinding device in the form of a tubular material to a sack forming device. The tubular material is provided with longitudinal seams in the sack forming device, with the seams extending over a major part of the sacks.

Abstract: A multi-color rotary printing machine has one printing plate support assigned to the colors that are transferred onto the print substrate. This printing plate support supports a printing plate and is attached to a mandrel or a cylinder of a rotary printing machine in order to transfer the print image onto the print substrate. The rotary printing machine has register devices that determine the position of the printing plates with respect to one another and that have sensors to determine the positions of the printing plate support in the printing machine.

Abstract: A process for the automatic control of the thickness of extruded film lowers the deviations in the thickness of the film more quickly after the start of the extrusion process. The process includes the measurement of the thickness profile of the film just extruded by means of a thickness-measuring probe. The thickness-measuring probe is moved along the surface of the film substantially perpendicular to the conveying direction of the extruded film. The thickness-measuring probe records a thickness profile of the film for each measuring cycle at least over parts of the expansion of the film perpendicular to its conveying direction. While providing statistical values in relation to older measured values, the latest measured values during a predetermined time-frame at the start of the extrusion process are more heavily weighted by a computer than those measured during the normal operation.

Abstract: A device for placing a paper bag bottom produces score lines on the ends of tubular segments which are used for producing bags, applies glue layers to the folded bottoms on the extremities of the tubular segments and/or to sheets for gluing them with the bottoms with the aid of gluers and connects and glues the folded bottoms and the sheets. The device has at least one gluer which includes at least one glue reservoir or at least one glue duct, the glue contained in the reservoir or in the duct being exposed to a pressure higher than ambient pressure. The glue reservoir or the glue duct is provided with at least one output orifice for applying the glue to the sheets and/or to the folded bottoms.

Abstract: A method for the attachment or introduction of valve or cover sheets, imprints, coatings and/or embossings in the correct position on or in components of tube pieces has several process steps. The steps include (a) recording of images of the components of several tube pieces with attached or introduced valve or cover sheets, imprints, coatings and/or embossings, (b) determining the positions of the valve or cover sheets, imprints, coatings and/or embossings relative to a reference point of the components of the tube pieces, (c) calculating the deviation of the determined position from the target position and (d) changing the positions of the valve or cover sheets and components of the tube pieces by a value that follows from the calculated deviation.

Abstract: A film die for the production of tubular film made of thermoplastic synthetics has at least one feed channel for the synthetic fused material which ends in a ring-shaped discharge nozzle with an interior and/or exterior cooling ring that is adjusted to the diameter of the extruded synthetic tube, in which physical parameters of the air blown onto the extruded film tube can be variably changed sector by sector. The film die is divided into sections, in which the temperature is individually variable, and/or additional bores are arranged across the circumference of the film die, which are essentially aligned vertical to the exterior cooling ring, whereby air of variable temperatures can be blown from them, the physical parameters of which are variable. The film die has at least one control unit that controls or operates the various measures for influencing the film thickness.

Abstract: The present invention relates to a base insert device for crossed base valve bags for the formation of crossed bases in paper bags, by means of folding devices which introduce folds at the ends of the tubular sections from which the bags are produced, with one or more gluing stations, which apply glue to the regions of the folds for gluing and/or the sheets (5) provided for gluing to the base, in the gluing stations and at least one pressing station in which the folded bases and the sheets (5) are brought into contact and glued. The novelty of the present patent application is that at least one gluing station for the sheets and/or bases is provided, comprising glue outlet openings (22) which may be selectively supplied with glue, whereby the selection of the glue outlet openings (22) defines the format of the glue application (6, 7, 8, 9).

Abstract: The invention describes-an extrusion device (1) for extruding a film tube in a direction (z) of movement, said extrusion device (1) comprising a nozzle head with an annular gap from which the film tube exits and said extrusion device (1) comprising an interior cooling device with which the extruded film tube can be cooled from the inside after its exit from the annular gap. Novel and inventive is the cooling element, which has the same cross-sectional form as the film tube and which has, in the direction (z) of motion of the extruded film tube, a surface which can be moved.

Abstract: A process and a device supply printing ink to and remove link from a doctor blade device of the inking system of a rotary printing press. The device has a doctor blade support provided with a linearly extending groove and with doctor blades that are contacted with an inking roller or screen roller, the blades forming together with the inking roller and the groove an inking chamber. The device has conduits and motor-driven pump devices that supply ink to and remove ink from the inking chamber. The motors are preadjusted in terms of their parameters and are not modifiable during operation. A portion of the ink from the flow of ink supplied to the doctor blade device can be diverted to an ink supply source, and/or a portion of the ink from the flow of ink removed from the doctor blade device can be returned to the ink supply conduit.

Abstract: A method for pre-registration in a printing machine with multiple printing units in which phases of the printing cylinders involved in the printing process are so mutually attuned that the deviations of the printing images of the different printing cylinders lie within mutual capture areas, includes using the deviations in the context of the registration of an ongoing printing operation, respectively, for the determination of the position of the printing images or parts thereof. The web to be printed, which is fed during the pre-registration to the printing machine, has at least one mark, which passes through different printing units during the pre-registration. The time points at which the mark passes the measuring points in the printing units are recorded, and these time points are set with reference to the angular position of the printing images of the respective printing units at those time points.

Abstract: The present invention relates to a device (1) for winding sheet-shaped material (4), that comprises longitudinally cutting devices (11, 12, 13, 14), that cuts the sheet-shaped material (4) into different strips and winds it up on each of the winding sleeves (7a, 7b) arranged on the strips and in which at least one winding sleeve support (20) is provided on which the winding sleeves (7a, 7b) can be arranged in such a manner that each strip is wound up on a winding sleeve (7a, 7b) intended for it and in which sources of light (16) are arranged in such a manner that they can be used to illuminate the cutting positions of the sheet-shaped material (4) and/or the longitudinally cutting devices (11, 12, 13, 14) and at least one winding sleeve support (20).

Abstract: The invention describes a sensor system (3) for measuring the thickness of flat material (2), which (1) [sic] is moved relative to the sensor system (3), said sensor system having a first sensor device (14) for measuring the thickness of the flat material (2) as well as means for generating an air cushion (23), which means are disposed in such a way that there results an air cushion (23) between that at least one side (16) [sic: (15)] of the sensor device (15) [sic: 14)] that faces the flat material (2) and the flat material (2) during operation. In the region of the air cushion (23), the first sensor device (14) comprises surface sections comprising porous material and/or material that is provided with micro-holes.

Abstract: The invention describes a sack (220) which (220) is formed by first transverse sealing seams (110, 150) from a foil tube (101), and which (101) is provided with at least a first vent channel (20), which runs largely parallel to the axis of the film tube (101), and whose inner (40) film layer has first vent openings for venting of the sack interior (210) into the first vent channel (20). It is characteristic that at least a second vent channel (140) is provided, which is connected to the first vent channel (140) by second vent openings (90, 100, 200), and which, in turn, has third vent openings (120), which vent the at least one second vent channel (140).

Abstract: A process for adjusting the print image of a rotating machine equipped with transfer rollers and actuators assigned to them includes changing the position of the rollers. During the printing operation, at least one camera records the intensity of light reflected from the printed material. The camera also feeds the recorded measured values to a control and regulation unit that compares the recorded measured values with set values, and generates corrective signals for the actuator of at least one part of the rollers involved in the printing process. Based on the corrective signals, the actuator of the relative position of the roller assigned to it is actuated until the measured values once again lie within a tolerance range.